I was copying multiple large files to an NFS4 share via Tracker. The target share window was open. While files are copied, the size does not update. Apparently, it is up to the file system to implement node monitoring messages while a file is written (twice a second would be just fine). In BeOS for example, one did not see a file grow while copying to a FAT32 volume.

The real bug, however, is that these files don't update after they are closed. They all stay at 0 Bytes, despite having arrived on the server correctly.